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From "Hope, Matthew" <>
Subject RE: [Commons] Component Packaging Options
Date Fri, 09 May 2003 16:36:35 GMT
Thanks - I wasn't aware of this (most of my dev is plain java or EJB and my
company isn't terribly big on the idea of multiple web apps on the same J2EE


-----Original Message-----
From: Craig R. McClanahan [] 
Sent: 09 May 2003 17:24
To: Jakarta Commons Users List
Subject: RE: [Commons] Component Packaging Options

On Fri, 9 May 2003, Hope, Matthew wrote:

> Yes indeed that would be problematic. In the absence of the .net feature
> multiple versions of code co-existing in the same VM I would suggest you
> need a special class loader to try and achieve it.

Servlet containers do this for you automatically.  Simply put the
dependent JARs for a particular webapp in its own "/WEB-INF/lib"
directory, and ensure that those JARs are not also visible in a
container-provided shared repository (i.e. /shared/lib or /common/lib on

Craig McClanahan

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